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Fuel cells might end up better than batteries if you consider the cost/lifetime of batteries. Energy density and safety are also valid considerations, the batte
by jojobas 4y ago
Fuel cells might end up better than batteries if you consider the cost/lifetime of batteries. Energy density and safety are also valid considerations, the batteries are already at the limit of what you'd want to sit on top.
- eru 4y agoHydrogen isn't really anything you'd be more keen to sit on top than other batteries, or is it?
- jojobas 4y agoHydrogen by itself has the energy density of zero. Batteries are nearing the energy density of high explosives (and for some types, such as Li-S, exceed it), and, unlike hydrogen, have all the components required for energy yield within micrometers of each other.
- eru 4y ago> Hydrogen by itself has the energy density of zero. Not sure how you measure that? Oxygen from the air is plentiful.